英文關鍵字
abstract
animation
arrow
black
chart
circle
circular
circulation
concept
connection
continuity
cursor
curve
curved
cycle
cyclic
direction
down
dynamic
ecology
element
environment
flow
graphic
icon
line
loop
motion
movement
outline
perspective
pointer
progress
recycle
recycling
refresh
repetition
ring
rotation
round
shape
sign
symbol
thin
turn
up
upwards
web